They very much did.
The biggest problem in the Americas is primarily down to fauna, and an excess of native resources.
Without beasts of burden, they were never able to develop the kind of farming that Eurasia saw. They had very sophisticated agriculture, as can be seen in corn and potatoes. Carefully domesticated and evolved so they are almost unrecognizable from their wild origins. Also they had some sophisticated metal work and stone work that was never seen in Africa or Eurasia among cultures of similar technological eras.
Remember, the classical pyramids in Egypt were created by a late Bronze Age people. Meanwhile, in the Americas several cultures were building similarly impressive stone structures while limited to Cooper Age technologies. And once things like the horse, cow and smelting were introduced to them, look how fast they took them up and ran with them themselves.
But in the end, it always boils down to the fauna and native copper. And even with those, they advanced far farther than any culture in Africa and Eurasia ever did at the same level of technology.
By your claim, Iran and Iraq had no technology compared to the US.